State of the art: utility of multi-energy CT in the evaluation of pulmonary vasculature

Prabhakar Rajiah, Yuki Tanabe, Sasan Partovi, Alastair Moore

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Multi-energy computed tomography (MECT) refers to acquisition of CT data at multiple energy levels (typically two levels) using different technologies such as dual-source, dual-layer and rapid tube voltage switching. In addition to conventional/routine diagnostic images, MECT provides additional image sets including iodine maps, virtual non-contrast images, and virtual monoenergetic images. These image sets provide tissue/material characterization beyond what is possible with conventional CT. MECT provides invaluable additional information in the evaluation of pulmonary vasculature, primarily by the assessment of pulmonary perfusion. This functional information provided by the MECT is complementary to the morphological information from a conventional CT angiography. In this article, we review the technique and applications of MECT in the evaluation of pulmonary vasculature.

Original languageEnglish (US)
Pages (from-to)1509-1524
Number of pages16
JournalInternational Journal of Cardiovascular Imaging
Issue number8
StatePublished - Aug 15 2019


  • CT
  • CT perfusion
  • Dual-energy CT
  • Multienergy CT
  • Pulmonary embolism

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine


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